Fireproof material.



,, IVH V JONAS W. AYLSWORTH, OF EAST ORANGE, NEW JERSEY, ASSIGNOR, BY DIRECT AND MZESNE ASSIGNMENTS, TO FIREPROOF PRODUCTS COMPANY, A CORPORATION OF NEW JERSEY.

FIREPBOOF MATERIAL.

No. 914,222 Specification of Letters Patent. Patented March 2, 1909.

' I Application filed May 9, 1907. Serial No. 372,688.

To all whomit may concern: taining the naphthalene under heat and Be it known that I, JONAS W. AYLswon'rH, pressure. a citizen of the United States, residing at 223 Theoretically, naphthalene is capable of Midland avenue, East Orange, county of Esyielding a large number of chlqrinieriyav r sex, and State of. New Jersey, have invented tives fo miag bgth aqdditive and substi; 60 i certain new and useful Improvements in tute compounds, an mai f'o'f tliese 4 Fireproof Material, of which the following is lime in the pure state, all showa description. v I ing specifically different roperties as re- This invention relates to improvements in gards melting point, volat' ity and hardness fire-proofing of normally inflammable fibers 0r conslstency. Even among isomers of the 65] i of animal and vegetable origin and materials same centesimal composition, these proper- N made therefrom, such as wood for the conties may vary widely. While all these derivstruction of ships, dwellings and furniture; atives are useful fireproofrs to a degree corfabrics like carpets, interior hangings, thearespondin to the ,percentagep gontalna 5 ter curtains, wall paper, etc or in fact any cl'il'ofin an to some extent to the physicalv inflammable material of a fibrous or absorbproperties, since they are relatively inc'oment nature which it may be desirable to make bustible and upon heating yield fiame-dilut- "fireproofi ,,or substantiallyfireproof. While ing and flame-stifling vapors of variouschlono inflammable materials bf rganic origin rin compounds, yet it is by no means a matg-g can be made wholly incombustlble since all ter of indifference-which are used since their 7 such materials will decompose and char when physical properties, as stated, vary considheated sufficiently; yet they can be madeerably; flame-proof or flame resisting; 1" e., so that While the fireproofing material produced they will neither ignite on contact with a by chlorinating naphthalene in the described 7 I,

, flame nor themselves emit flame when heated manner is probably not a single, simple sub- 80.

i for a moderate length of time. This is the stance since its properties do not correspond commercial sense of the word fireproof and is exactly with those of any one of the chlorintlie one employed herein. ated naphthalene derivatives known. in the Many inorganic substances, such as water pure state, and while its properties are prob- H solutions oi alpn groftungstates, have been ably the result of the mutual modification p proposed and used foffii-eproofing in the of properties of a number of such mixed prior art, but these substances do not prederivatives, yet in carrying out such process a M vent evolution of combustible gases or proin a uniform manner upon ordinary nap duction of flame when material impregnated thalene uniform results are obtained and for I therewith is heated to a sufiioiently high the present purposes the product which is 90 j temperature, merely acting to retard igniuniformly obtained may be treated as a h o tlon in some degree. Wood, therefore, simple substance. The properties of this which has been impregnated with these inor substance are very' advantageous for the ganic substances will burn readily enough present purposes since it'combines a con- N 40 when subjected to a-sufficiently high ter'npervenient melting point of about 262 F. with a.

-. ature. Moreover, presence of relatively high subliming point, subliniing without d e harsh crystals of these inorganic materials composition at about 600; is soluble ma /---"'Wltllln the pores of wood makes such wood number of soly f mwwn difficult to work with'ordinary'tools. bontetrachlorid an na htha;an containsa l have discovered that by chlprinating very high per cent..0 f c 11 Contalmn 1G? naphthalene-as far as possible in the manner about 68 per cent. It IS a waxhke body an i set forth in my copending applications, Serial not harsh or brittle, so that when used-to nn- Nos. 372,689 and 372,690, 0th filedMay 9, pregnate wood and the like it in no way 1907, I can produce novel chlorin derivatives affects the workable character in an injuri- .30 which may be usefully employed for fireone way. As a matter of fact, it preserves 1G5 proofing fibrous materials. Briefly stated, the wood and makes it dense and waterthis process, as described in said copending proof, being insoluble .in water. It may be i i a plications, consists in chlorinating naphapplied to wood and other fibrous materials t alene asfar as possible by the action of in a molten state, such material being satuchlorin, preferably electrolytic, while mainrated ,or coated as may be desired. Or the 1.3 2

volatile solvent, the solvent being afterward scribed new fireproofing substance is easily evaporated away from or dried out of the employed and handled; its, convenience in .treated material. The material maybe this respect making it adaptable for pur- 5" dipped in such a solution or the solution may poses Where its fireproof qualities are of'sub- 30 j be a plied with a brush. ordinate importance. Having a specific i 2" r .ff 1 Y 914,222

00d and like fibrous materials treated I gravity of about 1.850 it is dense and well 7 i with the described substance are efficiently suited for waxing wood to render it fireproof fireproofed, it beingimpossible to ignite them and for other purposes.

Q 10 by contact with flame and when placed in a What Iclaim 1s: .35 I fire of considerable size, such treated ma- As a newarticle, fiber impregnated with a j terials evolve incombustible vapors, dilutchlorinated derivative of naphthalene, such T ,mgandextinguishing combustible vapors, so derivative containing about 68 :per cent. of a that such materialsdo not produce flame. chlorin, having a melting point of about '15 The incombustible vapors are probably, 262 F., being soluble in'chloroform, carbon 40 partly those of the firegroofing material tetrachiorid and naphtha, having a specific v i tself"- artly various car on chlorids progravity of about 1.850 and being waxlike in 'duced. y its decom osition under the heat. consistence. I a 9 '-Whi1ethefireproofe materialmayb'eexposed This s ecification signed and witnessed 20 to teniilperatures as'higli) 1211s 430- F. wiithout this 7th clay of May, 1907. V p eno eva oration, su 'mation or ecomposi ti on of the fire roofer to make such JONAS AYLSWORTH' treated material ammable. At higher Witnesses: i v heats 'thematerial slowly volatilizes, giving FRANK 11. DYER,

251.05 uninflammable vapors. I 'FRANK'DyLEWIS. a 

